About “Tractatus de purgatorio sancti Patricii”
Tractatus de Purgatorio Sancti Patricii is a Latin text written about 1180-1184 by a monk who identified himself as H. of Saltrey, a Cistercian in Huntingdonshire. The author is traditionally called Henry, though this attribution was an insertion by Matthew of Paris and has been contested by historian Jacques le Goff. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.